SU1647087A2 - Jet action ditch cleaner - Google Patents

Description

one

(61) 1543020

(21) 4383606/03

(22) 02.23.88

(46) 07.05.91. Bul Number 17

(71) All-Union Scientific Research Institute of Hydraulic Engineering and Land Reclamation. A.M.Kostikova

(72) A.A. Zhestkov

(53) 621.879.48 (088.8)

(56) USSR Copyright Certificate No. 1543020, cl. E 02 F 5/02, 1987.

(54) SPRAY TUBE WIPER

(57) The invention relates to earthmoving machinery, namely, machines for cleaning lined canals. The purpose of the invention is to increase the effectiveness of the destruction of the soil by increasing the power of the air jet.

The jet sewer cleaner includes a jet flow generator mounted on the base chassis and a source of compressed air. On the main nozzle apparatus (SA) 4, chambers (K) 5.6 for forming pneumatic pulses are mounted. At the same time K through the valve communicated with CA 9,10. At the outlet of CA 4 there is a hollow confused-diffuser nozzle 11. On the side of the nozzle 11, there is an annular slot 12 connected to CA 10. A pulsed outflow of compressed air from the annular slot 12 nozzle 11 from CA 10 creates an ejecting effect in the environment. it occurs periodically during the pulse outflow of compressed air from the slot 12. 2 Il.

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The invention relates to earthmoving machinery, in particular, machines for cleaning lined canals, and is an improvement to canalisers according to ed. No. 1543020.

The aim of the invention is to increase the effectiveness of the destruction of the soil by increasing the power of the air jet.

Figure 1 shows a diagram of the jet sewage:; general view; Fig.2 is a layout of the main and additional nozzle devices.

The jet canal cleaner consists of a base chassis 1 on which a jet flow generator 2 and a source of compressed air 3 are installed. On the main nozzle device 4 an additional 5 and main 6 chambers of formation of pneumo-pulses are mounted, which through high-speed

valves 7 and 8 are in communication with the main 9 and 10 auxiliary nozzle devices. At the outlet of the main nozzle apparatus 4 there is a confuser-diffuser nozzle 11 (of the Laval type), which is hollow. At the end of the nozzle 11 there is an annular gap f2 connected to an additional auxiliary nozzle apparatus 10, the chambers 5 and 6 forming the pneumatic pulses are fed with compressed air from the source 3 through the pipeline 13.

The conically converging nozzle of the auxiliary nozzle apparatus 10 is located inside the main nozzle apparatus 4 so that, in the arrangement with the confusion-diffuser nozzle, forms an ejector device.

The canal cleaner works as follows.

Having driven onto the edge of the channel 14, the driver transfers the main nozzle apparatus 4 from the transport position to the working position (Fig. 1). Includes a generator 2 jet stream and a source of 3 compressed air. At the same time, the jet stream injected by the generator 2 passes through the main nozzle apparatus 4 and, having elapsed at high speed i, acts on the soil of the sediment in the channel 14. Destructible particles and pieces of soil blow- $ 5 of the soil with a high adhesion coefficient and to everything

with a jet out of the channel 14. At the same time, the source 3 of compressed air pumps air under pressure of several atmospheres into chambers 5 and 6, for example, reinforced by a strongly branched root system with sprouted water vegetation.

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Mirovani pneumopulses. When a certain degree of air compression in these chambers is reached, a signal for opening is sent to the fast-acting valves 7. From chambers 5 and 6, compressed air rushes pulsed through nozzle devices 9 and 10 into the bottom, producing a shock impact on the soil | Nanos. A powerful pulsed flow of compressed air is imposed on the main outflow of the jet stream from the nozzle apparatus 4. This causes a very effective destruction of the compacted soil layers in the channel 14 and blowing it out of the channel limits. At the same time, the pulse outflow (simultaneous or alternate) of compressed air from chambers 5 and 6 creates an instant suction effect in the main jet stream, which leads to the occurrence of pressure pulsations and flow in it. This also has a positive effect on increasing the destructive and blowing capacity of the main jet stream.

In addition, the pulsed flow of compressed air from the annular slot 12 of the hollow nozzle 11 from the additional auxiliary nozzle apparatus 10 creates some ejection effect in the environment. Moreover, it occurs periodically during a pulsed flow of compressed air from the slit 12. At the time of suction from the environment, dust particles are absorbed into the stream, which can accumulate lumps of soil, which increases the density of the jet stream and, consequently, its shock power.

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When the geometry of the confuser-diffuser nozzle 11 is performed, like the geometry of the Laval nozzle, the main jet flow in the nozzle unit 4 is accelerated to sound speeds (300 m / s). All these effects separately and taken together significantly

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they increase the soil-crushing and blowing abilities of the jet-pulsed sewer cleaning machine. This is especially important and necessary when cleaning concrete channels and chutes, in which sediments are formed of particles.

on the other hand, they are reinforced by a strongly branched root system with sprouted aquatic vegetation.

Claims (1)

Invention Formula Jet kanalooochnnstitel auth.St. No. 1543020, characterized in that, in order to increase the efficiency of soil destruction by increasing the air jet power, it is equipped with an additional nozzle apparatus and an additional chamber for forming pneumatic pulses with a high-speed valve associated with a source of compressed air, while the confused-diffuser nozzle walls of the main nozzle apparatus are made hollow with an annular gap on the side of its end, and the annular gap is connected with an additional chamber for forming pneumatic pulses by means of an additional nozzle apparatus. FIG. 2